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From: "Joel Wirāmu Pauling" <joel@aenertia.net>
To: Mikael Abrahamsson <swmike@swm.pp.se>
Cc: Dave Taht <dave@taht.net>,
	 "cerowrt-devel@lists.bufferbloat.net"
	<cerowrt-devel@lists.bufferbloat.net>,
	bloat <bloat@lists.bufferbloat.net>
Subject: Re: [Bloat] [Cerowrt-devel] DC behaviors today
Date: Mon, 4 Dec 2017 23:27:19 +1300	[thread overview]
Message-ID: <CAKiAkGQ7Hn82OB62gFReTj3iYOnT=n0Nbf5MkV5RW7yy68X8jA@mail.gmail.com> (raw)
In-Reply-To: <alpine.DEB.2.20.1712041109310.8884@uplift.swm.pp.se>

How to deliver a switch, when the wiring and port standard isn't
actually workable?

10GBase-T is out of Voltage Spec with SFP+ ; you can get copper SFP+
but they are out of spec... 10GbaseT doesn't really work over Cat5e
more than a couple of meters (if you are lucky) and even Cat6 is only
rated at 30M... there is a reason no-one is producing Home Copper
switches and it's not just the NIC Silicon cost (that was a factor
until Recently obviously, but only part of the equation).

On the flip side:
Right now I am typing this via a 40gbit network, comprised of the
cheap and readily available Tb3 port - it's daisy chained and limited
to 6 ports, but right now it's easily the cheapest and most effective
port. Pitty that the fabled optical tb3 cables are damn expensive...
so you're limited to daisy-chains of 2m. They seem to have screwed the
pooch on the USB-C network standard quite badly - which looked so
promising, so for the moment Tb3 it is for me at least.

On 4 December 2017 at 23:18, Mikael Abrahamsson <swmike@swm.pp.se> wrote:
> On Mon, 4 Dec 2017, Joel Wirāmu Pauling wrote:
>
>> I'm not going to pretend that 1Gig isn't enough for most people. But I
>> refuse to believe it's the networks equivalent of a 10A power (20A
>> depending on where you live in the world) AC residential phase
>> distribution circuit.
>
>
> That's a good analogy. I actually believe it is, at least for the near 5-10
> years.
>
>> This isn't a question about what people need, it's more about what the
>> market can deliver. 10GPON (GPON-X) and others now make it a viable
>> service that can and is being deployed in residential and commercial
>> access networks.
>
>
> Well, you're sharing that bw with everybody else on that splitter. Sounds to
> me that the service being delivered over that would instead be in the 2-3
> gigabit/s range for the individual subscriber (this is what I typically see
> on equivalent shared mediums, that the top speed individual subscriptions
> are will be in the 20-40% of max theoretical speed the entire solution can
> deliver).
>
>> The problem is now that Retail Servicer Provider X can deliver a post
>> Gigabit service... what is capable of taking it off the ONU/CMNT point in
>> the home? As usual it's a follow the money question, once RSP's can deliver
>> Gbit+ they will need an ecosystem in the home to feed into it, and right now
>> there isn't a good technology platform that supports it; 10GBase-X/10GBaseT
>> is a non-starter due to the variability in home wiring - arguably the 7 year
>> leap from 100-1000mbit was easy It's mean a gap of 12 years and counting for
>> the same.. it's not just the NIC's and CPU's in the gateways it's the
>> connector and in-home wiring problems as well.
>
>
> As soon as one goes above 1GE, prices increases A LOT on everything
> involved. I doubt we'll see any 2.5G or higher speed equipment in wide use
> in home/SME in the next 5 years.
>
>> Blatant Plug - request :
>> I'm interested to hear opinions on this as I have a talk on this very
>> topic 'The long and Winding Road to 10Gbit+ in the home'
>> https://linux.conf.au/ at Linuxconf in January. In particular if you
>> have any home network gore/horror stories and photos you would be
>> happy for me to include in my talk, please include.
>
>
> I am still waiting for a decently priced 10GE switch. I can get 1GE 24port
> managed ones, fanless, for 100-200USD. As soon as I go 10GE, price jumps up
> a lot, and I get fans. The NICs aren't widely available, even though they're
> not the biggest problem. My in-house cabling can do 10GE, but I guess I'm an
> outlier.
>
>
> --
> Mikael Abrahamsson    email: swmike@swm.pp.se

  reply	other threads:[~2017-12-04 10:27 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CAA93jw43M=dhPOFhMJo7f-qOq=k=kKS6ppq4o9=hsTEKoBdUpA@mail.gmail.com>
     [not found] ` <92906bd8-7bad-945d-83c8-a2f9598aac2c@lackof.org>
     [not found]   ` <CAA93jw5pRMcZmZQmRwSi_1dETEjTHhmg2iJ3A-ijuOMi+mg4+Q@mail.gmail.com>
     [not found]     ` <CAKiAkGT54RPLQ4f1tzCj9wcW=mnK7+=uJfaotw9G+H_JEy_hqQ@mail.gmail.com>
2017-12-04  4:19       ` [Bloat] " Dave Taht
2017-12-04  9:13         ` [Bloat] [Cerowrt-devel] " Mikael Abrahamsson
2017-12-04  9:31           ` Joel Wirāmu Pauling
2017-12-04 10:18             ` Mikael Abrahamsson
2017-12-04 10:27               ` Joel Wirāmu Pauling [this message]
2017-12-04 10:43                 ` Pedro Tumusok
2017-12-04 10:47                   ` Joel Wirāmu Pauling
2017-12-04 10:57                     ` Pedro Tumusok
2017-12-04 10:59                       ` Joel Wirāmu Pauling
2017-12-04 12:44                       ` Mikael Abrahamsson
2017-12-04 19:59                         ` dpreed
2017-12-04 20:29                           ` David Collier-Brown
2017-12-08  7:05                           ` Mikael Abrahamsson
2017-12-12 15:09                             ` Luca Muscariello
2017-12-12 18:36                               ` Dave Taht
2017-12-12 22:53                                 ` dpreed
2017-12-12 23:20                                   ` Jonathan Morton
2017-12-13 10:20                                     ` Mikael Abrahamsson
2017-12-13 10:45                                   ` Luca Muscariello
2017-12-13 15:26                                   ` Neil Davies
2017-12-13 16:41                                     ` Jonathan Morton
2017-12-13 18:08                                       ` dpreed
2017-12-13 19:55                                         ` Neil Davies
2017-12-13 21:06                                           ` Jonathan Morton
2017-12-14  8:22                                       ` Mikael Abrahamsson
2017-12-17 21:37                                         ` Benjamin Cronce
2017-12-18  8:11                                           ` Mikael Abrahamsson
2017-12-17 11:52                                 ` Matthias Tafelmeier
2017-12-18  7:50                                   ` Mikael Abrahamsson
2017-12-19 17:55                                     ` Matthias Tafelmeier
2017-12-27 15:15                                       ` Matthias Tafelmeier
2018-01-20 11:55                                 ` Joel Wirāmu Pauling
2017-12-04 12:41                 ` Mikael Abrahamsson
2017-12-04 10:56         ` [Bloat] Linux network is damn fast, need more use XDP (Was: DC behaviors today) Jesper Dangaard Brouer
2017-12-04 17:00           ` Dave Taht
2017-12-04 20:49             ` Joel Wirāmu Pauling
2017-12-07  8:43             ` Jesper Dangaard Brouer
2017-12-07  8:49             ` Jesper Dangaard Brouer
2017-12-04 17:19           ` Matthias Tafelmeier

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